JP6869685B2 - Wind farm and wind farm - Google Patents

Description

The present invention relates to a wind farm and a wind power generation device in which a plurality of wind power generation devices are installed, and more particularly to a wind farm capable of reducing the degree of damage of each wind power generation device and a wind power generation device suitable for installing the wind farm. ..

In a wind farm where multiple wind turbines are installed adjacent to each other, the wind called the wake of the wind turbine (also simply called the wake) that has passed through the wind farm located on the windward side is located on the leeward side. Inflow into the wind farm. In the wake of the wind turbine, problems such as a decrease in the amount of power generated by the wind turbine generator and an increase in the degree of damage to the wind turbine generator occur. In order to deal with such a problem, a method of controlling the inclination angle of the blade of the wind power generation device located on the windward side, or a method of reversing the rotor rotation direction of the adjacent wind power generation device has been proposed.

For example, Patent Document 1 discloses a method of controlling an inclination angle (pitch angle) of a blade of a wind power generator located on the wind side, and wind farm including a plurality of wind power generators (T1, Ti-1, Ti). Describes the configuration in which the operating parameters of the wind power generators (T1, Ti-1, Ti) are adjusted according to the optimization target during the operation of the wind farm. Then, it is disclosed that the above optimization target is set to the maximum value of the total output of the wind farm formed from the sum of all the individual outputs (Pi) of the plurality of wind power generators (T1, Ti-1, Ti). There is.
Further, in Patent Document 2, a first wind power generator having a rotor having a first rotation direction and a rotor rotating in a second rotation direction opposite to the rotation direction of the rotor of the first wind power generator are used. A configuration is disclosed in which the second wind power generator to be provided is arranged so as to be separated by a certain distance in the horizontal direction or the vertical direction. These first wind power generators and second wind power generators are arranged adjacent to each other and alternately, and the influence of the eddy current caused by the rotation of each rotor due to the rotation of the rotors in opposite directions. It is stated that mutual reduction will improve the life of the wind turbine generator.

Special Table 2010-526963 JP-A-2015-155690

However, in the wind farm described in Patent Document 1, it is necessary to newly introduce a network for aggregating information from all wind power generation devices and a central processing unit for determining control parameters, and the equipment cost must be increased. It may lead to an increase. Further, in the wind farm described in Patent Document 2, two types of wind power generators having different blade rotation directions must be prepared, and it is difficult to apply the wind farm to an existing wind farm, for example.
Therefore, the present invention provides a wind farm and a wind power generation device capable of reducing the degree of damage of each wind power generation device without introducing a central processing unit of the wind farm or a new wind power generation device having different blade rotation directions. ..

In order to solve the above problems, the wind farm according to the present invention is a wind farm including at least a rotor that rotates in response to wind and a wind power generator including a yaw angle control device that controls the direction of the rotation surface of the rotor. Therefore, the wake region is determined based on the wind direction data and the information on the direction of the rotation surface of the rotor of the wind power generator located on the wind side, and the position information of the determined wake region and the wind power generator located on the leeward side. Based on the above, a control device for controlling the direction of the rotating surface of the rotor of the wind power generator located on the wind side is provided , and the control device partially has a wind turbine wake that has passed through the wind power generator located on the wind side. If there is a wind turbine located on the leeward side that flows into, the wind turbine located on the leeward side is inside the wake region generated by the wind turbine located on the leeward side or is generated. It is characterized in that the direction of the rotating surface of the rotor of the wind turbine generator located on the wind side is controlled so as to be located outside the wake region.
Further, the wind power generation device according to the present invention is a wind power generation device that can be installed in a wind farm, and includes at least a rotor that rotates in response to wind and a yaw angle control device that controls the direction of the rotation surface of the rotor. , The wake region is determined based on the wind direction data and the information on the direction of the rotation surface of the rotor, and the rotation surface of the rotor is determined based on the position information of the determined wake region and other wind power generators located on the leeward side. The control device includes a control device for controlling the direction of the wind turbine, and the control device is said to be used when there is another wind turbine generator located on the leeward side where the wake of the wind turbine that has passed through the wind turbine generator partially flows in. The rotor is characterized in that the orientation of the rotating surface of the rotor is controlled so that the other wind turbine generator located on the leeward side is located inside the wake region or outside the wake region.

According to the present invention, there is provided a wind farm and a wind power generation device capable of reducing the degree of damage of each wind power generation device without introducing a central computing device of the wind farm or a new wind power generation device having a different blade rotation direction. It becomes possible.
Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

It is an overall schematic block diagram of the wind power generation apparatus of Example 1 which concerns on one Example of this invention. It is a functional block diagram of the control device shown in FIG. It is a flowchart which shows the processing flow of the control device shown in FIG. It is a figure which shows the relationship between the wind power generation device located on the windward side and the wind power generation device located on the leeward side installed in the wind farm. It is a top view which shows an example of a small-scale wind farm which consists of the wind power generation device located on the windward side and the wind power generation device located on the leeward side. It is a top view which shows an example of a large-scale wind farm consisting of a large number of wind power generation devices. It is a figure which shows the propagation direction of the wake of a wind turbine generated by the relationship between the direction of the rotating surface of the rotor which constitutes a wind power generation apparatus, and the wind direction. It is a figure which shows an example of the control of the direction of the rotating surface of the rotor which constitutes the wind power generation apparatus located on the windward side. It is a figure which shows an example of the control of the direction of the rotating surface of the rotor which constitutes the wind power generation apparatus located on the windward side. It is a functional block diagram of the control device which comprises the wind power generation device of Example 2 which concerns on another Example of this invention. It is a flowchart which shows the processing flow of the control apparatus shown in FIG. It is a functional block diagram of the control device which comprises the wind power generation device of Example 3 which concerns on another Example of this invention. It is a flowchart which shows the processing flow of the control device shown in FIG. It is a functional block diagram of the control device which comprises the wind power generation device of Example 4 which concerns on another Example of this invention. It is a flowchart which shows the processing flow of the control device shown in FIG. It is a functional block diagram of the control device which comprises the wind power generation device of Example 5 which concerns on another Example of this invention. It is a flowchart which shows the processing flow of the control apparatus shown in FIG.

In the present specification, as the wind power generation device according to the embodiment of the present invention, a downwind type wind power generation device will be described as an example, but the same can be applied to an upwind type wind power generation device. Further, an example in which the rotor is composed of three blades and a hub is shown, but the present invention is not limited to this, and the rotor may be composed of a hub and at least one blade. The wind farm in which a plurality of wind power generators according to the embodiment of the present invention are installed adjacent to each other can be provided at any of the offshore, mountainous and plain areas.
Hereinafter, examples of the present invention will be described with reference to the drawings. It should be noted that the following is only an example, and is not intended to limit the embodiment of the present invention.

FIG. 1 is an overall schematic configuration diagram of a wind power generation device according to a first embodiment of the present invention. As shown in FIG. 1, the wind power generator 2 includes a blade 23 that rotates in response to wind, a hub 22 that supports the blade 23, a nacelle 21, and a tower 20 that rotatably supports the nacelle 21. In the nacelle 21, a spindle 25 connected to the hub 22 and rotating together with the hub 22 and a rotor 27 connected to the spindle 25 to increase the rotation speed rotate the rotor at the increased rotation speed to generate power. It is equipped with a generator 28. The portion that transmits the rotational energy of the blade 23 to the generator 28 is called a power transmission unit, and in this embodiment, the main shaft 25 and the speed increaser 27 are included in the power transmission unit. The speed increaser 27 and the generator 28 are held on the main frame 29. Further, the rotor 24 is composed of the blade 23 and the hub 22. As shown in FIG. 1, a power converter 30 that converts the frequency of electric power, a switch and a transformer for switching that switches and switches current (not shown), and a control device 31 are arranged inside the tower 20. ing. In Figure 1, although the power converter 30及beauty controller 31 is installed on the bottom of the tower, the location of these devices is not limited to the tower bottom, as long as the interior of a wind turbine generator 2, elsewhere It may be installed in. Further, an anemometer 32 for measuring wind direction data and wind speed data is installed on the upper surface of the nacelle 21. As the control device 31, for example, a control panel or SCADA (Supervision Control And Data Acquisition) is used.

Further, the direction of the nacelle 21 is referred to as a yaw angle, and the wind power generator 2 includes a yaw angle control device 33 that controls the direction of the nacelle 21, that is, the direction of the rotating surface of the rotor 24. As shown in FIG. 1, the yaw angle control device 33 is arranged between the bottom surface of the nacelle 21 and the tip end portion of the tower 20, and is composed of, for example, at least an actuator and a motor for driving the actuator (not shown). Based on the yaw angle control command output from the control device 31 via the signal line, the nacelle 21 rotates to obtain the desired yaw angle by rotating the motor constituting the yaw angle control device 33 and shifting the actuator by a desired amount. Rotate.

Here, the wind farm according to this embodiment will be described. FIG. 4 is a diagram showing the relationship between the wind power generation device located on the windward side and the wind power generation device located on the leeward side installed in the wind farm. FIG. 4 shows an example in which the wind that has passed through the wind power generation device 2a located on the windward side flows into the wind power generation device 2b located on the leeward side installed in the wind farm 1.
As shown in FIG. 4, the wind that has passed through the wind power generator 2a located on the windward side is called a wind turbine wake (also simply referred to as a wake). In the wake of the wind turbine, the wind characteristics such as the wind direction and the wind speed change as compared with those before flowing into the wind power generator 2a located on the windward side. This change in characteristics depends on the operating state of the wind power generator 2a located on the windward side. The operating state referred to here includes the inclination angle (pitch angle) of the blade 23 of the wind power generator or the direction of the rotating surface of the rotor 24.

FIG. 5 is a top view showing an example of a small-scale wind farm composed of a wind power generation device located on the windward side and a wind power generation device located on the leeward side, and FIG. 6 is a large-scale view including a large number of wind power generation devices. It is a top view which shows an example of a wind farm. FIG. 5 shows an example of a small-scale wind farm 1 composed of one wind power generation device 2a located on the windward side and one wind power generation device 2b located on the leeward side, and FIG. 6 shows one unit. It is composed of a wind power generator 2a located on the windward side of the wind farm, a wind farmer 2b located on the leeward side of the wind farm, a wind farmer 2c partially affected by the wake of the wind turbine, and a large number of wind power generators 2d. This is an example of a large-scale wind farm 1. The wind farm 1 referred to here refers to a wind farm or a group of wind power generation devices including at least two or more wind power generation devices.

The wind power generation device 2 installed in the wind farm 1 includes a wind power generation device 2a located on the windward side with respect to the wind direction, a wind power generation device 2b located on the leeward side, and a wind power generation device partially affected by the wake of the wind turbine. It is classified into 2c and other wind power generators 2d, and these classifications also change as the wind direction changes. Specifically, in the example of FIG. 6, the wake of the wind turbine generated by the wind turbine generator 2a located on the windward side flows into the wind turbine generator 2b located on the leeward side, but is located on the leeward side due to a change in the wind direction. When the wind power generation device 2b, the wind power generation device 2c or the wind power generation device 2d plays the same role as the wind power generation device 2a located on the wind side, or when the wind power generation device 2a, the wind power generation device 2c or the wind power is located on the wind side. The power generation device 2d may play a role similar to that of the wind power generation device 2b located on the leeward side.

Here, the wake (wake) of the wind turbine will be described. The wind passing through the wind power generation device 2a located on the windward side changes the wind conditions such as the wind direction and the wind speed due to the influence of the rotation of the rotor 24 constituting the wind power generation device 2a located on the windward side. The wind condition that changes at this time is not limited to the above-mentioned wind direction and speed, but all physical quantities related to the wind such as turbulent flow characteristics and vortex shape, which are the turbulence of the wind, can be considered. As shown in FIGS. 5 and 6, the wind turbine wake (wake) passes through the wind turbine generator 2a located on the windward side, and then spreads and flows to the leeward side. That is, the wake of the wind turbine propagates to the leeward side while diffusing and generating a vortex (turbulent flow). The region in which the wind turbine wake propagates to the leeward side while diffusing and generating a vortex (turbulent flow) is hereinafter referred to as a wind turbine wake region (also referred to as a wake region).

In the wind power generation device 2b and the wind power generation device 2c located on the leeward side shown in FIG. 6, the amount of power generation is lower than that of the wind power generation device 2d located outside the wind turbine wake region (wake region), and the leeward side. The degree of damage accumulated in the wind power generation device 2b and the wind power generation device 2c located in is increased. In particular, in the wind power generator 2c, the wind condition flowing into the rotating surface of the rotor 24 becomes non-uniform, so that the degree of damage tends to be particularly large. That is, in the wind power generator 2c partially affected by the wake of the wind turbine, the amplitude of the load applied to the rotating surface of the rotor 24 is generated, and the inside of the nacelle 21 is formed via the blade 23, the hub 22, and the spindle 25. The vibration is propagated to the speed increaser 27 or the generator 28 arranged in the above, and the vibration is also propagated to the tower 20 that rotatably supports the nacelle 21. The amplitude of the load that causes these vibrations greatly affects the degree of damage to each device constituting the wind power generation device 2c.

FIG. 7 shows the propagation direction of the wake of the wind turbine generated by the relationship between the direction of the rotating surface of the rotor constituting the wind power generator and the wind direction. As shown in the upper figure of FIG. 7, when the rotating surface of the rotor 24 of the wind power generator 2 faces the wind direction, the wind turbine wake propagates in the same direction as the wind direction, and the wind turbine wake region (backflow). Region) is formed. On the other hand, as shown in the lower figure of FIG. 7, when the rotating surface of the rotor 24 of the wind power generating device 2 is oriented obliquely with respect to the wind direction, the wind flowing into the wind power generating device 2 is received from the rotating surface of the rotor 24. Due to the lateral force, the wind turbine wake propagates diagonally with respect to the wind direction, and a wind turbine wake region (wake region) inclined with respect to the wind direction is formed.

8 and 9 show an example of controlling the direction of the rotating surface of the rotor 24 constituting the wind power generation device 2a located on the windward side. When there is no wind power generation device 2c partially affected by the wake of the wind turbine with respect to the wind power generation device 2a located on the wind side, the wind power generation device 2a located on the wind side has the rotating surface of the rotor 24 as usual. The yaw angle is controlled by the yaw angle control device 33 (FIG. 1) so as to face the wind direction. On the other hand, as shown in the upper figure of FIG. 8, when there is a wind power generation device 2c in which the wake of the wind turbine partially flows into the wind power generation device 2a located on the windward side, it is shown in the lower figure of FIG. As described above, the direction of the rotating surface of the rotor 24 is changed by controlling the yaw angle by the yaw angle control device 33 provided in the wind power generation device 2a located on the windward side. As a result, the propagation direction of the wind turbine wake is changed, and the wind turbine wake region 2c into which the wind turbine wake partially flows is located outside the wind turbine wake region (wake region). The inflow of the wake of the wind turbine is avoided, and the wind turbine generator 2c can be operated as the wind turbine generator 2d (hereinafter referred to as wake avoidance control). At this time, if the direction of the rotation surface of the rotor 24 of the wind power generator 2a located on the windward side and the amount of deviation of the wind direction become large, the degree of damage to the wind power generator 2a located on the windward side increases.

Therefore, as shown in the lower figure of FIG. 9, the direction of the rotating surface of the rotor 24 is changed by controlling the yaw angle by the yaw angle control device 33 provided in the wind power generation device 2a located on the windward side. Thus changes the propagation direction of the wind turbine wake, to wind turbine generator 2c that the wind turbine wake is partially flows, will be the wind turbine wake is generally flowing, the wind turbine generator 2c as a wind turbine generator 2b Make it operable (hereinafter referred to as wake center control). Here, the wake center control controls so that the entire rotating surface of the rotor 24 constituting the wind turbine power generation device 2c into which the wind turbine wake partially flows is located inside the wind turbine wake region (wake region). The wind turbine generator 2c, in which the wind turbine wake partially flows in, is positioned in the center of the wind turbine wake region (wake region) so that the center of the wind turbine wake and the center of the rotating surface of the rotor 24 coincide with each other. It is desirable to control.

FIG. 2 shows a functional block diagram of the control device 31 arranged in the tower 20 of the wind power generation device 2 shown in FIG. 1, and FIG. 3 shows a flowchart showing a processing flow of the control device shown in FIG. The control device 31 shown below is provided in all the wind power generation devices (2a to 2d) installed in the wind farm 1, but the operation shown in the flowchart of FIG. 3 described later is the wind force located on the windward side. It is executed by the power generation device 2. That is, it is executed by the wind power generation device 2a located on the windward side, which is installed in the small-scale wind farm 1 and the large-scale wind farm 1 shown in FIGS. 5 and 6 described above.

As shown in FIG. 2, the control device 31 includes a measurement value acquisition unit 311, a wind direction calculation unit 312, a wind turbine wake calculation unit 313, a position determination unit 314, a control determination unit 315, a yaw angle calculation unit 316, and an input I / F 317a. , Output I / F 317b, and storage unit 318, which are connected to each other so as to be accessible by the internal bus 319. The measurement value acquisition unit 311, the wind direction calculation unit 312, the wind turbine wake calculation unit 313, the position determination unit 314, the control determination unit 315, and the yaw angle calculation unit 316 are, for example, processors such as a CPU (Central Processing Unit) (not shown). It is realized by a ROM that stores various programs, a RAM that temporarily stores data in the calculation process, and a storage device such as an external storage device, and a processor such as a CPU reads and executes various programs stored in the ROM. The calculation result, which is the execution result, is stored in the RAM or an external storage device. Although the explanation is divided into functional blocks for the sake of clarity, the wind direction calculation unit 312, the wind turbine wake calculation unit 313, the position determination unit 314, the control determination unit 315, and the yaw angle calculation unit 316 are shown. It may be a single arithmetic unit, or it may be configured to integrate desired functional blocks.

The measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, and for example, A / D conversion processing and smoothing processing (noise removal). ) Or normalization processing is executed.
Storage unit 318, at least, in advance, the area of the plane of rotation of the position information及beauty own rotor 24 itself (the wind turbine generator 2a positioned on the windward side) of the wind farm 1, other installed within wind farm 1 The position information of the wind power generators (2b to 2d) and the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) are stored. Here, the area of the rotating surface of the rotor 24 is, for example, the area when the yaw angle faces the rotating surface of the rotor 24 at zero degrees, and includes the area of the tower 20. Further, in the storage unit 318, the current yaw angle (information on the direction of the rotation surface of the rotor 24) of itself (the wind power generator 2a located on the wind side), the shape data of the blade 23, and the rotation speed of the rotor 24 are stored. Alternatively, the pitch angle of the blade 23 is also stored.

The wind direction calculation unit 312 acquires the wind direction data processed by the measured value acquisition unit 311 via the internal bus 319, and the wind direction that flows into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the windward side). To determine.
The wind turbine wake calculation unit 313 uses, for example, the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measurement value acquisition unit 311 and the current yaw angle (of the rotating surface of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23. It should be noted that the above-mentioned all parameters are not limited to be used, and at least the wind turbine wake region (wake region) is based only on the wind direction data, the wind speed data, and the current yaw angle (information on the direction of the rotating surface of the rotor 24). ) May be calculated. Further, the wind turbine wake region (wake region) may be calculated based only on the wind direction data.

The position determination unit 314 accesses the storage unit 318 via the internal bus 319, and the position information of other wind power generators (2b to 2d) installed in the wind farm 1 read from the storage unit 318 and the said. The wind turbine wake partially flows in based on the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313. Determines the presence or absence of the wind power generator 2c. When there is a wind turbine generator 2c into which the wake of the wind turbine partially flows, the position determination unit 314 transfers the information to the control determination unit 315 via the internal bus 319. In the determination of the presence / absence of the wind turbine wake region 2c in which the wind turbine wake partially flows in, the position information of the other wind turbine generators (2b to 2d) and the wind turbine wake region calculated by the wind turbine wake calculation unit 313 ( The configuration may be such that the determination is made based only on the wake region).

The control determination unit 315 stores the position information of the wind power generation device 2c and the area of the rotating surface of the rotor 24 based on the information of the wind power generation device 2c in which the wake of the wind turbine transferred from the position determination unit 314 partially flows. The wake avoidance control (FIG. 8) and the wake center control (FIG. 8) that can suppress the reduction of the output of the generator 28 (FIG. 1) (the generator output of the wind power generator 2a located on the wind side) read from the unit 318. One of FIG. 9) is selected.
The yaw angle calculation unit 316 corresponds to the wake avoidance control or the wake center control selected by the control determination unit 315, and the wind turbine wake partially flows into the wind turbine wake read from the storage unit 318. Based on the position information and the area of the rotating surface of the rotor 24, the direction of the rotating surface of the rotor 24 in the wind power generator 2a located on the wind side is obtained, and the yaw angle control command corresponding to the direction of the rotating surface of the rotor 24 is issued. It is output to the yaw angle control device 33 via the output I / F.

Next, the operation of the control device 31 will be described. FIG. 3 is a flowchart showing a processing flow of the control device shown in FIG.
As shown in FIG. 3, in step S101, the measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, for example, A. Performs / D conversion processing, smoothing processing (noise removal), normalization processing, and the like. Then, the measured value acquisition unit 311 transfers the processed wind direction data to the wind direction calculation unit 312 via the internal bus 319.

In step S102, the wind direction calculation unit 312 determines the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a (own) located on the windward side based on the wind direction data processed by the transferred measurement value acquisition unit 311. decide.
In step S103, the wind turbine wake calculation unit 313 uses the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measured value acquisition unit 311 and the current yaw angle (rotation of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the surface orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23.

In step S104, the position determination unit 314 accesses the storage unit 318 via the internal bus 319, and of another wind power generation device (2b to 2d) installed in the wind farm 1 read from the storage unit 318. Based on the position information and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313 , it is determined whether or not there is a wind power generation device 2c in which the wind turbine wake partially flows. As a result of the determination, when there is no wind power generation device 2c into which the wake of the wind turbine partially flows, the wind power generation device 2a located on the windward side is set so that the rotating surface of the rotor 24 faces the wind direction as usual. , The yaw angle control device 33 (FIG. 1) controls the yaw angle and ends the process. On the other hand, as a result of the determination, if there is a wind power generation device 2c in which the wake of the wind turbine partially flows, the process proceeds to step S105.

In step S105, the control determination unit 315 determines the position information of the wind power generation device 2c and the rotating surface of the rotor 24 based on the information of the wind power generation device 2c into which the wake of the wind turbine transferred from the position determination unit 314 partially flows. The wake avoidance control (FIG. 8) and the wake can suppress the reduction of the output of the generator 28 (FIG. 1) (the generator output of the wind power generator 2a located on the wind side). One of the flow center controls (FIG. 9) is selected and transferred to the yaw angle control device 33 via the internal bus 319.

In step S106, the yaw angle calculation unit 316 corresponds to the wake avoidance control or the wake center control selected by the control determination unit 315, and the wind turbine wake partially flowing in from the wind turbine wake read from the storage unit 318. Based on the position information of the power generating device 2c and the area of the rotating surface of the rotor 24, the direction of the rotating surface of the rotor 24 in the wind power generating device 2a located on the wind side is obtained, and the yaw angle corresponding to the direction of the rotating surface of the rotor 24 is obtained. The control command is output to the yaw angle control device 33 via the output I / F, and the process ends.

In this embodiment, a small-scale wind farm composed of two wind power generation devices and a large number of three or more wind power generation devices are offset from each other at predetermined intervals. The explanation was given using a wind farm as an example, but it is not limited to this. For example, the same can be applied to a wind farm in which a large number of three or more wind power generators are separated from each other at predetermined intervals and installed in a two-dimensional matrix.

As described above, according to the present embodiment, the wind farm and the wind power capable of reducing the degree of damage of each wind power generation device without introducing a central processing unit of the wind farm or a new wind power generation device having a different blade rotation direction. It becomes possible to provide a power generation device.
Specifically, according to the present embodiment, by controlling the direction of the rotating surface of the rotor 24 of the wind power generation device 2a located on the wind side, the inside of the rotating surface of the rotor 24 like the wind power generation device 2c It is possible to avoid the inflow of non-uniform wind, suppress the increase in the degree of damage to the wind power generator in the wind farm, and contribute to the improvement of reliability. Moreover, since it is not necessary to prepare a wind power generator having a new structure or its parts, the introduction is easy. In addition, since there is no need to communicate with other wind farms or with a central management system that monitors the entire wind farm, each wind farm can be easily installed independently in the wind farm. ..

FIG. 10 is a functional block diagram of a control device constituting the wind power generation device of the second embodiment according to another embodiment of the present invention, and FIG. 11 is a flowchart showing a processing flow of the control device shown in FIG. .. In this embodiment, the control device is either wake avoidance control or wake center control so that the amount of deviation between the direction of the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side and the wind direction is small. Is different from the first embodiment in that it is configured to select. The same components as in the first embodiment are designated by the same reference numerals, and the description overlapping with the first embodiment will be omitted below.

The control device 31a shown below is provided in all the wind power generation devices (2a to 2d) installed in the wind farm 1, but the operation shown in the flowchart of FIG. 11 described later is the wind force located on the windward side. It is executed by the power generation device 2. That is, in the same manner as in the first embodiment described above, in the wind power generation device 2a located on the windward side, which is installed in the small-scale wind farm 1 and the large-scale wind farm 1 shown in FIGS. 5 and 6. Will be executed.

As shown in FIG. 10, the control device 31a provided in the wind power generation device 2a located on the windward side includes a measurement value acquisition unit 311, a wind direction calculation unit 312, a wind turbine wake calculation unit 313, a position determination unit 314, and a control determination unit. It includes a 315, a yaw angle calculation unit 316, an input I / F 317a, an output I / F 317b, and a storage unit 318, which are connected to each other so as to be accessible by an internal bus 319. The measurement value acquisition unit 311, the wind direction calculation unit 312, the wind turbine wake calculation unit 313, the position determination unit 314, the control determination unit 315, and the yaw angle calculation unit 316 are, for example, processors such as a CPU (Central Processing Unit) (not shown). It is realized by a ROM that stores various programs, a RAM that temporarily stores data in the calculation process, and a storage device such as an external storage device, and a processor such as a CPU reads and executes various programs stored in the ROM. The calculation result, which is the execution result, is stored in the RAM or an external storage device. Although the explanation is divided into functional blocks for the sake of clarity, the wind direction calculation unit 312, the wind turbine wake calculation unit 313, the position determination unit 314, the control determination unit 315, and the yaw angle calculation unit 316 are shown. It may be a single arithmetic unit, or it may be configured to integrate desired functional blocks.

The measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, and for example, A / D conversion processing and smoothing processing (noise removal). ) Or normalization processing is executed.
Storage unit 318, at least, in advance, the area of the plane of rotation of the position information及beauty own rotor 24 itself (the wind turbine generator 2a positioned on the windward side) of the wind farm 1, other installed within wind farm 1 The position information of the wind power generators (2b to 2d) and the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) are stored. Here, the area of the rotating surface of the rotor 24 is, for example, the area when the yaw angle faces the rotating surface of the rotor 24 at zero degrees, and includes the area of the tower 20. Further, in the storage unit 318, the current yaw angle (information on the direction of the rotation surface of the rotor 24) of itself (the wind power generator 2a located on the wind side), the shape data of the blade 23, and the rotation speed of the rotor 24 are stored. Alternatively, the pitch angle of the blade 23 is also stored.

The wind direction calculation unit 312 acquires the wind direction data processed by the measured value acquisition unit 311 via the internal bus 319, and the wind direction that flows into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the windward side). To determine.
The wind turbine wake calculation unit 313 uses, for example, the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measurement value acquisition unit 311 and the current yaw angle (of the rotating surface of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23. It should be noted that the above-mentioned all parameters are not limited to be used, and at least the wind turbine wake region (wake region) is based only on the wind direction data, the wind speed data, and the current yaw angle (information on the direction of the rotating surface of the rotor 24). ) May be calculated. Further, the wind turbine wake region (wake region) may be calculated based only on the wind direction data.

The position determination unit 314 accesses the storage unit 318 via the internal bus 319, and the position information of other wind power generators (2b to 2d) installed in the wind farm 1 read from the storage unit 318 and the said. The wind turbine wake partially flows in based on the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313. Determines the presence or absence of the wind power generator 2c. When there is a wind turbine generator 2c into which the wake of the wind turbine partially flows, the position determination unit 314 transfers the information to the control determination unit 315 via the internal bus 319. In the determination of the presence / absence of the wind turbine wake region 2c in which the wind turbine wake partially flows in, the position information of the other wind turbine generators (2b to 2d) and the wind turbine wake region calculated by the wind turbine wake calculation unit 313 ( The configuration may be such that the determination is made based only on the wake region).

The yaw angle calculation unit 316 directs the rotation surface (yaw angle) of the rotor 24 of the wind power generator 2a located on the windward side when the wake avoidance control (FIG. 8) and the wake center control (FIG. 9) are executed. ), And transferred to the control determination unit 315 via the internal bus 319. The direction (yaw angle) of the rotating surface of the rotor 24 of the wind turbine generator 2a located on the wind side is the position information of the wind turbine generator 2c into which the wake of the wind turbine partially flows, which is read from the storage unit 318. It is calculated based on the area of the rotating surface of the rotor 24. Further, the yaw angle calculation unit 316 rotates the rotor 24 in the wind power generator 2a corresponding to the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) selected by the control determination unit 315 described later. The direction of the surface (yaw angle) is used as a yaw angle control command and is output to the yaw angle control device 33 via the output I / F.

The control determination unit 315 is the direction (yaw angle) of the rotating surface of the rotor 24 of the wind power generator 2a located on the wind side when the wake avoidance control (FIG. 8) obtained by the yaw angle calculation unit 316 is executed. And the amount of deviation from the wind direction flowing into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the wind side) determined by the wind direction calculation unit 312 is calculated. Similarly, the direction (yaw angle) of the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side when the wake center control (FIG. 9) is executed, and the self (determined by the wind direction calculation unit 312). The amount of deviation from the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a) located on the windward side is calculated. Then, the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) showing a value with a small calculated deviation amount is selected and transferred to the yaw angle calculation unit 316 via the internal bus 319.

Next, the operation of the control device 31a will be described.
As shown in FIG. 11, in step S201, the measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, for example, A. Performs / D conversion processing, smoothing processing (noise removal), normalization processing, and the like. Then, the measured value acquisition unit 311 transfers the processed wind direction data to the wind direction calculation unit 312 via the internal bus 319.

In step S202, the wind direction calculation unit 312 determines the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a (own) located on the windward side based on the wind direction data processed by the transferred measurement value acquisition unit 311. decide.
In step S203, the wind turbine wake calculation unit 313 uses the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measurement value acquisition unit 311 and the current yaw angle (rotation of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the surface orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23.

In step S204, the position determination unit 314 accesses the storage unit 318 via the internal bus 319, and of another wind power generation device (2b to 2d) installed in the wind farm 1 read from the storage unit 318. Based on the position information and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313 , it is determined whether or not there is a wind power generation device 2c in which the wind turbine wake partially flows. As a result of the determination, when there is no wind power generation device 2c into which the wake of the wind turbine partially flows, the wind power generation device 2a located on the windward side is set so that the rotating surface of the rotor 24 faces the wind direction as usual. , The yaw angle control device 33 (FIG. 1) controls the yaw angle and ends the process. On the other hand, as a result of the determination, if there is a wind power generation device 2c in which the wake of the wind turbine partially flows, the process proceeds to step S205.

In step S205, when the yaw angle calculation unit 316 executes the wake avoidance control (FIG. 8) and the wake center control (FIG. 9), the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side The direction (yaw angle) is obtained for each, and the direction (yaw angle) is transferred to the control determination unit 315 via the internal bus 319.
In step S206, the control determination unit 315 faces the rotation surface of the rotor 24 of the wind power generator 2a located on the windward side when the wake avoidance control (FIG. 8) obtained by the yaw angle calculation unit 316 is executed. The amount of deviation between (yaw angle) and the wind direction flowing into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the windward side) determined by the wind direction calculation unit 312 is calculated. Similarly, the direction (yaw angle) of the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side when the wake center control (FIG. 9) is executed, and the self (determined by the wind direction calculation unit 312). The amount of deviation from the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a) located on the windward side is calculated. Then, the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) showing a value with a small calculated deviation amount is selected and transferred to the yaw angle calculation unit 316 via the internal bus 319.

In step S207, the yaw angle calculation unit 316 corresponds to the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) selected by the control determination unit 315, and is located on the windward side of the wind power generator 2a. The direction (yaw angle) of the rotating surface of the rotor 24 is output to the yaw angle control device 33 via the output I / F as a yaw angle control command, and the process is completed.

As described above, according to the present embodiment, in addition to the effect of the first embodiment, the direction of the rotating surface of the rotor 24 of the wind power generation device 2a located on the windward side and the wind direction flowing into the wind power generation device 2a located on the windward side. By reducing the amount of deviation, it is possible to minimize the increase in the degree of damage not only in the wind turbine generator 2c that is partially affected by the wake of the wind turbine, but also in the wind turbine generator 2a located on the windward side. Become.

FIG. 12 is a functional block diagram of a control device constituting the wind power generation device of the third embodiment according to another embodiment of the present invention, and FIG. 13 is a flowchart showing a processing flow of the control device shown in FIG. .. In this embodiment, the control device provided in the wind power generation device has at least an operation record holding unit that holds the operation history of the wind power generation device and a damage degree calculation unit, and is obtained by the damage degree calculation unit based on the operation history. The difference from the first embodiment is that one of the wake avoidance control and the wake center control is selected based on the degree of damage accumulated in the wind power generation device located on the windward side. The same components as in the first embodiment are designated by the same reference numerals, and the description overlapping with the first embodiment will be omitted below.

The control device 31b shown below is provided in all the wind power generation devices (2a to 2d) installed in the wind farm 1, but the operation shown in the flowchart of FIG. 13 described later is the wind force located on the windward side. It is executed by the power generation device 2. That is, in the same manner as in the first embodiment described above, in the wind power generation device 2a located on the windward side, which is installed in the small-scale wind farm 1 and the large-scale wind farm 1 shown in FIGS. 5 and 6. Will be executed.

As shown in FIG. 12, the control device 31b provided in the wind power generation device 2a located on the wind side is a measurement value acquisition unit 311, a wind direction calculation unit 312, a wind turbine wake calculation unit 313, a position determination unit 314, and a control determination unit. 315, yaw angle calculation unit 316, input I / F317a, output I / F317b, storage unit 318, operation record holding unit 320, and damage degree calculation unit 321 are provided, and these are connected to each other so as to be accessible by the internal bus 319. Has been done. The measured value acquisition unit 311, the wind direction calculation unit 312, the windmill wake calculation unit 313, the position determination unit 314, the control determination unit 315, the yaw angle calculation unit 316, and the damage degree calculation unit 321 are, for example, CPUs (Central Processing Units) (not shown). It is realized by a processor such as Unit), a ROM that stores various programs, a RAM that temporarily stores data of the calculation process, and a storage device such as an external storage device, and various processors such as a CPU are stored in the ROM. The program is read and executed, and the calculation result, which is the execution result, is stored in the RAM or an external storage device. Although the explanation is divided into functional blocks for the sake of clarity, the wind direction calculation unit 312, the wind turbine wake calculation unit 313, the position determination unit 314, the control determination unit 315, the yaw angle calculation unit 316, and the like. The damage degree calculation unit 321 may be a single calculation unit, or may be configured to integrate desired functional blocks.

The measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, and for example, A / D conversion processing and smoothing processing (noise removal). ) Or normalization processing is executed.
Storage unit 318, at least, in advance, the area of the plane of rotation of the position information及beauty own rotor 24 itself (the wind turbine generator 2a positioned on the windward side) of the wind farm 1, other installed within wind farm 1 The position information of the wind power generators (2b to 2d) and the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) are stored. Here, the area of the rotating surface of the rotor 24 is, for example, the area when the yaw angle faces the rotating surface of the rotor 24 at zero degrees, and includes the area of the tower 20. Further, in the storage unit 318, the current yaw angle (information on the direction of the rotation surface of the rotor 24) of itself (the wind power generator 2a located on the wind side), the shape data of the blade 23, and the rotation speed of the rotor 24 are stored. Alternatively, the pitch angle of the blade 23 is also stored.

The operation record holding unit 320 stores operation data from the past to the present, for example, an operation history including the rotation speed of the rotor 24, the output of the generator 28, and the yaw angle. It is preferable that the data stored in the operation record holding unit 320 includes data measured in the wind power generation device such as wind conditions or strain in addition to the above operation history. Here, for example, the data regarding the strain of the stored blade 23 is measured by a strain sensor or a strain gauge installed at the base of the blade 23 or the like. The load applied to the blade 23 is obtained based on the measured value from the strain sensor installed at the base of the blade 23 or the like. In the calculation of the load applied to the blade 23, not only the load applied to the base of the blade 23 on which the strain sensor is installed but also the load applied to the tip of the blade 23 or an arbitrary position of the blade 23 is calculated. Estimated based on the measured value from the strain sensor.

The wind direction calculation unit 312 acquires the wind direction data processed by the measured value acquisition unit 311 via the internal bus 319, and the wind direction that flows into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the windward side). To determine.
The wind turbine wake calculation unit 313 uses, for example, the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measurement value acquisition unit 311 and the current yaw angle (of the rotating surface of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23. It should be noted that the above-mentioned all parameters are not limited to be used, and at least the wind turbine wake region (wake region) is based only on the wind direction data, the wind speed data, and the current yaw angle (information on the direction of the rotating surface of the rotor 24). ) May be calculated. Further, the wind turbine wake region (wake region) may be calculated based only on the wind direction data.

The position determination unit 314 accesses the storage unit 318 via the internal bus 319, and the position information of other wind power generators (2b to 2d) installed in the wind farm 1 read from the storage unit 318 and the said. The wind turbine wake partially flows in based on the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313. Determines the presence or absence of the wind power generator 2c. When there is a wind turbine generator 2c into which the wake of the wind turbine partially flows, the position determination unit 314 transfers the information to the control determination unit 315 via the internal bus 319. In the determination of the presence / absence of the wind turbine wake region 2c in which the wind turbine wake partially flows in, the position information of the other wind turbine generators (2b to 2d) and the wind turbine wake region calculated by the wind turbine wake calculation unit 313 ( The configuration may be such that the determination is made based only on the wake region).

The yaw angle calculation unit 316 directs the rotation surface (yaw angle) of the rotor 24 of the wind power generator 2a located on the windward side when the wake avoidance control (FIG. 8) and the wake center control (FIG. 9) are executed. ), And transferred to the control determination unit 315 via the internal bus 319. The direction (yaw angle) of the rotating surface of the rotor 24 of the wind turbine generator 2a located on the wind side is the position information of the wind turbine generator 2c into which the wake of the wind turbine partially flows, which is read from the storage unit 318. It is calculated based on the area of the rotating surface of the rotor 24. Further, the yaw angle calculation unit 316 rotates the rotor 24 in the wind power generator 2a corresponding to the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) selected by the control determination unit 315 described later. The direction of the surface (yaw angle) is used as a yaw angle control command and is output to the yaw angle control device 33 via the output I / F.

The damage degree calculation unit 321 stores operation data from the past to the present by the wind power generator 2a located on the windward side, which is stored in the operation record holding unit 320, for example, the rotation speed of the rotor 24, the output of the generator 28, and the output of the generator 28. Based on the operation history including the yaw angle, the degree of damage accumulated in the wind power generator 2a located on the windward side is obtained. The damage degree calculation unit 321 allows the amount of deviation between the wind direction and the direction of the rotating surface of the rotor 24 determined by the wind direction calculation unit 312 based on the damage degree accumulated in the wind power generator 2a located on the windward side. The value is calculated, and the obtained allowable value is transferred to the control determination unit 315 via the internal bus 319.

The control determination unit 315 is the direction (yaw angle) of the rotating surface of the rotor 24 of the wind power generator 2a located on the wind side when the wake avoidance control (FIG. 8) obtained by the yaw angle calculation unit 316 is executed. And the amount of deviation from the wind direction flowing into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the wind side) determined by the wind direction calculation unit 312 is calculated. Similarly, the direction (yaw angle) of the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side when the wake center control (FIG. 9) is executed, and the self (determined by the wind direction calculation unit 312). The amount of deviation from the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a) located on the windward side is calculated. Then, the calculated deviation amount is compared with the permissible value transferred from the damage degree calculation unit 321 to show a value having a small deviation amount and a wake avoidance control (FIG. 8) or a wake that is less than the permissible value. The central control (FIG. 9) is selected and transferred to the yaw angle calculation unit 316 via the internal bus 319.

Next, the operation of the control device 31b will be described.
As shown in FIG. 13, in step S301, the measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, for example, A. Performs / D conversion processing, smoothing processing (noise removal), normalization processing, and the like. Then, the measured value acquisition unit 311 transfers the processed wind direction data to the wind direction calculation unit 312 via the internal bus 319.

In step S302, the wind direction calculation unit 312 determines the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a (own) located on the windward side based on the wind direction data processed by the transferred measurement value acquisition unit 311. decide.
In step S303, the wind turbine wake calculation unit 313 uses the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measurement value acquisition unit 311 and the current yaw angle (rotation of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the surface orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23.

In step S304, the position determination unit 314 accesses the storage unit 318 via the internal bus 319, and of another wind power generation device (2b to 2d) installed in the wind farm 1 read from the storage unit 318. Based on the position information and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313 , it is determined whether or not there is a wind power generation device 2c in which the wind turbine wake partially flows. As a result of the determination, when there is no wind power generation device 2c into which the wake of the wind turbine partially flows, the wind power generation device 2a located on the windward side is set so that the rotating surface of the rotor 24 faces the wind direction as usual. , The yaw angle control device 33 (FIG. 1) controls the yaw angle and ends the process. On the other hand, as a result of the determination, if there is a wind power generation device 2c into which the wake of the wind turbine partially flows, the process proceeds to step S305.

In step S305, when the yaw angle calculation unit 316 executes the wake avoidance control (FIG. 8) and the wake center control (FIG. 9), the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side The direction (yaw angle) is obtained for each, and the direction (yaw angle) is transferred to the control determination unit 315 via the internal bus 319.
In step S306, the damage degree calculation unit 321 receives operation data from the past to the present by the wind power generation device 2a located on the windward side, which is stored in the operation record holding unit 320, for example, the rotation speed of the rotor 24 and the generator 28. Based on the output and the operation history including the yaw angle, the degree of damage accumulated in the wind power generator 2a located on the windward side is obtained. Then, based on the degree of damage accumulated in the wind power generator 2a located on the windward side, the permissible value of the amount of deviation between the wind direction determined by the wind direction calculation unit 312 and the direction of the rotating surface of the rotor 24 is calculated. The obtained allowable value is transferred to the control determination unit 315 via the internal bus 319.

In step S307, the control determination unit 315 directs the rotation surface of the rotor 24 of the wind power generator 2a located on the windward side when the wake avoidance control (FIG. 8) obtained by the yaw angle calculation unit 316 is executed. The amount of deviation between (yaw angle) and the wind direction flowing into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the windward side) determined by the wind direction calculation unit 312 is calculated. Similarly, the direction (yaw angle) of the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side when the wake center control (FIG. 9) is executed, and the self (determined by the wind direction calculation unit 312). The amount of deviation from the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a) located on the windward side is calculated. Then, the calculated deviation amount is compared with the permissible value transferred from the damage degree calculation unit 321 to show a value having a small deviation amount and a wake avoidance control (FIG. 8) or a wake that is less than the permissible value. The central control (FIG. 9) is selected and transferred to the yaw angle calculation unit 316 via the internal bus 319.

In step S308, the yaw angle calculation unit 316 is a wind power generator 2a located on the windward side corresponding to the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) selected by the control determination unit 315. The direction (yaw angle) of the rotating surface of the rotor 24 is output to the yaw angle control device 33 via the output I / F as a yaw angle control command, and the process is completed.

As described above, according to the present embodiment, in addition to the effect of the first embodiment, the degree of damage to the surrounding wind power generation devices (2b to 2d) is increased while ensuring the reliability of the wind power generation device 2a located on the windward side. Can be avoided.

FIG. 14 is a functional block diagram of a control device constituting the wind power generation device of the fourth embodiment according to another embodiment of the present invention, and FIG. 15 is a flowchart showing a processing flow of the control device shown in FIG. .. In this embodiment, the control device provided in the wind power generation device has at least an operation record holding unit for holding the operation history of the wind power generation device, a damage degree calculation unit, and a communication I / F, and the damage degree is based on the operation history. Backflow avoidance control and wake center based on the degree of damage accumulated in the wind power generation device located on the wind side and the degree of damage of other wind power generation devices acquired via the communication I / F, which are obtained by the calculation unit. It differs from the first embodiment in that it is configured to select either one of the controls. The same components as in the first embodiment are designated by the same reference numerals, and the description overlapping with the first embodiment will be omitted below.

The control device 31c shown below is provided in all the wind power generation devices (2a to 2d) installed in the wind farm 1, but the operation shown in the flowchart of FIG. 15 described later is the wind force located on the windward side. It is executed by the power generation device 2. That is, in the same manner as in the first embodiment described above, in the wind power generation device 2a located on the windward side, which is installed in the small-scale wind farm 1 and the large-scale wind farm 1 shown in FIGS. 5 and 6. Will be executed.

As shown in FIG. 14, the control device 31c provided in the wind power generation device 2a located on the wind side is a measurement value acquisition unit 311, a wind direction calculation unit 312, a wind turbine wake calculation unit 313, a position determination unit 314, and a control determination unit. 315, yaw angle calculation unit 316, input I / F317a, output I / F317b, storage unit 318, operation record holding unit 320, damage degree calculation unit 321 and communication I / F317c, which are mutually connected to the internal bus 319. Is connected so that it can be accessed. The measured value acquisition unit 311, the wind direction calculation unit 312, the windmill wake calculation unit 313, the position determination unit 314, the control determination unit 315, the yaw angle calculation unit 316, and the damage degree calculation unit 321 are, for example, CPUs (Central Processing Units) (not shown). It is realized by a processor such as Unit), a ROM that stores various programs, a RAM that temporarily stores data of the calculation process, and a storage device such as an external storage device, and various processors such as a CPU are stored in the ROM. The program is read and executed, and the calculation result, which is the execution result, is stored in the RAM or an external storage device. Although the explanation is divided into functional blocks for the sake of clarity, the wind direction calculation unit 312, the wind turbine wake calculation unit 313, the position determination unit 314, the control determination unit 315, the yaw angle calculation unit 316, and the like. The damage degree calculation unit 321 may be a single calculation unit, or may be configured to integrate desired functional blocks. The communication I / F 317c is configured to be able to communicate with a control device of another wind power generation device via a communication network (whether wired or wireless). In the example shown in FIG. 14, an example of being connected to the control device of the wind power generation device 2c is shown, and the control device 31c of the wind power generation device 2a located on the wind side is connected to the wind power generation device 2c via the communication I / F 317c. It is configured so that the degree of damage can be obtained.

The measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, and for example, A / D conversion processing and smoothing processing (noise removal). ) Or normalization processing is executed.
Storage unit 318, at least, in advance, the area of the plane of rotation of the position information及beauty own rotor 24 itself (the wind turbine generator 2a positioned on the windward side) of the wind farm 1, other installed within wind farm 1 The position information of the wind power generators (2b to 2d) and the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) are stored. Here, the area of the rotating surface of the rotor 24 is, for example, the area when the yaw angle faces the rotating surface of the rotor 24 at zero degrees, and includes the area of the tower 20. Further, in the storage unit 318, the current yaw angle (information on the direction of the rotation surface of the rotor 24) of itself (the wind power generator 2a located on the wind side), the shape data of the blade 23, and the rotation speed of the rotor 24 are stored. Alternatively, the pitch angle of the blade 23 is also stored.

The operation record holding unit 320 stores operation data from the past to the present, for example, an operation history including the rotation speed of the rotor 24, the output of the generator 28, and the yaw angle. It is preferable that the data stored in the operation record holding unit 320 includes data measured in the wind power generation device such as wind conditions or strain in addition to the above operation history. Here, for example, the data regarding the strain of the stored blade 23 is measured by a strain sensor or a strain gauge installed at the base of the blade 23 or the like. The load applied to the blade 23 is obtained based on the measured value from the strain sensor installed at the base of the blade 23 or the like. In the calculation of the load applied to the blade 23, not only the load applied to the base of the blade 23 on which the strain sensor is installed but also the load applied to the tip of the blade 23 or an arbitrary position of the blade 23 is calculated. Estimated based on the measured value from the strain sensor.

The wind direction calculation unit 312 acquires the wind direction data processed by the measured value acquisition unit 311 via the internal bus 319, and the wind direction that flows into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the windward side). To determine.
The wind turbine wake calculation unit 313 uses, for example, the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measurement value acquisition unit 311 and the current yaw angle (of the rotating surface of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23. It should be noted that the above-mentioned all parameters are not limited to be used, and at least the wind turbine wake region (wake region) is based only on the wind direction data, the wind speed data, and the current yaw angle (information on the direction of the rotating surface of the rotor 24). ) May be calculated. Further, the wind turbine wake region (wake region) may be calculated based only on the wind direction data.

The position determination unit 314 accesses the storage unit 318 via the internal bus 319, and the position information of other wind power generators (2b to 2d) installed in the wind farm 1 read from the storage unit 318 and the said. The wind turbine wake partially flows in based on the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313. Determines the presence or absence of the wind power generator 2c. When there is a wind turbine generator 2c into which the wake of the wind turbine partially flows, the position determination unit 314 transfers the information to the control determination unit 315 via the internal bus 319. In the determination of the presence / absence of the wind turbine wake region 2c in which the wind turbine wake partially flows in, the position information of the other wind turbine generators (2b to 2d) and the wind turbine wake region calculated by the wind turbine wake calculation unit 313 ( The configuration may be such that the determination is made based only on the wake region).

The yaw angle calculation unit 316 directs the rotation surface (yaw angle) of the rotor 24 of the wind power generator 2a located on the windward side when the wake avoidance control (FIG. 8) and the wake center control (FIG. 9) are executed. ), And transferred to the control determination unit 315 via the internal bus 319. The direction (yaw angle) of the rotating surface of the rotor 24 of the wind turbine generator 2a located on the wind side is the position information of the wind turbine generator 2c into which the wake of the wind turbine partially flows, which is read from the storage unit 318. It is calculated based on the area of the rotating surface of the rotor 24. Further, the yaw angle calculation unit 316 rotates the rotor 24 in the wind power generator 2a corresponding to the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) selected by the control determination unit 315 described later. The direction of the surface (yaw angle) is used as a yaw angle control command and is output to the yaw angle control device 33 via the output I / F.

The damage degree calculation unit 321 stores operation data from the past to the present by the wind power generator 2a located on the windward side, which is stored in the operation record holding unit 320, for example, the rotation speed of the rotor 24, the output of the generator 28, and the output of the generator 28. Based on the operation history including the yaw angle, the degree of damage accumulated in the wind power generator 2a located on the windward side is obtained. The damage degree calculation unit 321 acquires the damage degree accumulated in the wind power generation device 2c via the communication I / F 317c, and obtains the damage degree of the wind power generation device 2a located on the windward side and the acquired wind power generation device 2c. The degree of damage is transferred to the control determination unit 315 via the internal bus 319.

The control determination unit 315 compares the damage degree of the wind power generation device 2a located on the windward side transferred from the damage degree calculation unit 321 with the damage degree of the acquired wind power generation device 2c. As a result of the comparison, when the damage degree of the wind power generation device 2a (self) located on the windward side of the damage degree of the wind power generation device 2c is larger, the wake center control (FIG. 9) is selected. On the other hand, as a result of comparison, when the damage degree of the wind power generation device 2c is larger than the damage degree of the wind power generation device 2a (self) located on the windward side, the wake avoidance control (FIG. 8) is selected. Thereby, it is possible to determine the control method (wake avoidance control or wake center control) of the wind power generation device 2a located on the windward side so that the load is concentrated on the wind power generation device having a small accumulated damage degree. It becomes. The control determination unit 315 transfers the information of the selected wake avoidance control (FIG. 8) or wake center control (FIG. 9) to the yaw angle calculation unit 316 via the internal bus 319.

Next, the operation of the control device 31c will be described.
As shown in FIG. 15, in step S401, the measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, for example, A. Performs / D conversion processing, smoothing processing (noise removal), normalization processing, and the like. Then, the measured value acquisition unit 311 transfers the processed wind direction data to the wind direction calculation unit 312 via the internal bus 319.

In step S402, the wind direction calculation unit 312 determines the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a (own) located on the windward side based on the wind direction data processed by the transferred measurement value acquisition unit 311. decide.
In step S403, the wind turbine wake calculation unit 313 uses the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measured value acquisition unit 311 and the current yaw angle (rotation of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the surface orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23.

In step S404, the position determination unit 314 accesses the storage unit 318 via the internal bus 319, and of another wind power generation device (2b to 2d) installed in the wind farm 1 read from the storage unit 318. Based on the position information and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313 , it is determined whether or not there is a wind power generation device 2c in which the wind turbine wake partially flows. As a result of the determination, when there is no wind power generation device 2c into which the wake of the wind turbine partially flows, the wind power generation device 2a located on the windward side is set so that the rotating surface of the rotor 24 faces the wind direction as usual. , The yaw angle control device 33 (FIG. 1) controls the yaw angle and ends the process. On the other hand, as a result of the determination, if there is a wind power generation device 2c in which the wake of the wind turbine partially flows in, the process proceeds to step S405.

In step S405, when the yaw angle calculation unit 316 executes the wake avoidance control (FIG. 8) and the wake center control (FIG. 9), the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side The direction (yaw angle) is obtained for each, and the direction (yaw angle) is transferred to the control determination unit 315 via the internal bus 319.
In step S406, the damage degree calculation unit 321 receives operation data from the past to the present by the wind power generator 2a located on the windward side, which is stored in the operation record holding unit 320, for example, the rotation speed of the rotor 24 and the generator 28. Based on the output and the operation history including the yaw angle, the degree of damage accumulated in the wind power generator 2a (self) located on the windward side is obtained. Further, the damage degree calculation unit 321 acquires the damage degree accumulated in the wind power generation device 2c in which the wake of the wind turbine partially flows through the communication I / F 317c, and obtains the damage degree of the wind power generation device 2a located on the windward side. The degree of damage of the wind turbine generator 2c and the degree of damage of the wind turbine generator 2c into which the acquired wind turbine wake partially flows are transferred to the control determination unit 315 via the internal bus 319.

In step S407, the control determination unit 315 damages the wind power generation device 2a located on the windward side transferred from the damage degree calculation unit 321 and the acquired wind turbine wake partially flows into the wind power generation device 2c. Compare with degree. As a result of comparison, when the degree of damage of the wind power generation device 2a (self) located on the windward side is larger than the degree of damage of the wind power generation device 2c in which the wake of the wind turbine partially flows, the wake center control (Fig. 9). Select. On the other hand, as a result of comparison, when the damage degree of the wind power generation device 2c in which the wind turbine wake partially flows in is larger than the damage degree of the wind power generation device 2a (self) located on the windward side, the wake avoidance control (Fig. 8) is selected. The control determination unit 315 transfers the information of the selected wake avoidance control (FIG. 8) or wake center control (FIG. 9) to the yaw angle calculation unit 316 via the internal bus 319.

In step S408, the yaw angle calculation unit 316 is a wind power generator 2a located on the windward side corresponding to the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) selected by the control determination unit 315. The direction (yaw angle) of the rotating surface of the rotor 24 is output to the yaw angle control device 33 via the output I / F as a yaw angle control command, and the process is completed.

As described above, according to the present embodiment, in addition to the effect of the first embodiment, by preferentially protecting the wind power generation device having a large accumulation of damage degree, the damage degree of a specific wind power generation device becomes remarkably large. This can be avoided and the reliability of the entire wind farm can be improved.

FIG. 16 is a functional block diagram of a control device constituting the wind power generation device of the fifth embodiment according to another embodiment of the present invention, and FIG. 17 is a flowchart showing a processing flow of the control device shown in FIG. .. In this embodiment, the control device provided in the wind power generation device is provided with a demand forecasting unit, and the control device of the wind power generation device 2a located on the wind side is adjusted according to the power demand by the demand forecasting unit. Different from Example 1. The same components as in the first embodiment are designated by the same reference numerals, and the description overlapping with the first embodiment will be omitted below.

The control device 31d shown below is provided in all the wind power generation devices (2a to 2d) installed in the wind farm 1, but the operation shown in the flowchart of FIG. 17 described later is the wind force located on the windward side. It is executed by the power generation device 2. That is, in the same manner as in the first embodiment described above, in the wind power generation device 2a located on the windward side, which is installed in the small-scale wind farm 1 and the large-scale wind farm 1 shown in FIGS. 5 and 6. Will be executed.

As shown in FIG. 16, the control device 31d provided in the wind power generation device 2a located on the wind side is a measurement value acquisition unit 311, a wind direction calculation unit 312, a wind turbine wake calculation unit 313, a position determination unit 314, and a control determination unit. It includes 315, a yaw angle calculation unit 316, an input I / F 317a, an output I / F 317b, a storage unit 318, and a demand forecast unit 322, which are connected to each other so as to be accessible by an internal bus 319. The measured value acquisition unit 311, the wind direction calculation unit 312, the wind turbine wake calculation unit 313, the position determination unit 314, the control determination unit 315, the yaw angle calculation unit 316, and the demand prediction unit 322 are, for example, a CPU (Central Processing Unit) (not shown). ), A ROM that stores various programs, a RAM that temporarily stores data in the calculation process, a storage device such as an external storage device, and various programs in which a processor such as a CPU is stored in the ROM. Is read and executed, and the calculation result, which is the execution result, is stored in the RAM or an external storage device. Although the explanation is divided into functional blocks for the sake of clarity, the wind direction calculation unit 312, the wind turbine wake calculation unit 313, the position determination unit 314, the control determination unit 315, the yaw angle calculation unit 316, and the like. The demand forecasting unit 322 may be a single calculation unit, or may be configured to integrate desired functional blocks.

The measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, and for example, A / D conversion processing and smoothing processing (noise removal). ) Or normalization processing is executed.
Storage unit 318, at least, in advance, the area of the plane of rotation of the position information及beauty own rotor 24 itself (the wind turbine generator 2a positioned on the windward side) of the wind farm 1, other installed within wind farm 1 The position information of the wind power generators (2b to 2d) and the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) are stored. Here, the area of the rotating surface of the rotor 24 is, for example, the area when the yaw angle faces the rotating surface of the rotor 24 at zero degrees, and includes the area of the tower 20. Further, in the storage unit 318, the current yaw angle (information on the direction of the rotation surface of the rotor 24) of itself (the wind power generator 2a located on the wind side), the shape data of the blade 23, and the rotation speed of the rotor 24 are stored. Alternatively, the pitch angle of the blade 23 is also stored.

The wind direction calculation unit 312 acquires the wind direction data processed by the measured value acquisition unit 311 via the internal bus 319, and the wind direction that flows into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the windward side). To determine.
The wind turbine wake calculation unit 313 uses, for example, the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measurement value acquisition unit 311 and the current yaw angle (of the rotating surface of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23. It should be noted that the above-mentioned all parameters are not limited to be used, and at least the wind turbine wake region (wake region) is based only on the wind direction data, the wind speed data, and the current yaw angle (information on the direction of the rotating surface of the rotor 24). ) May be calculated. Further, the wind turbine wake region (wake region) may be calculated based only on the wind direction data.

The position determination unit 314 accesses the storage unit 318 via the internal bus 319, and the position information of other wind power generators (2b to 2d) installed in the wind farm 1 read from the storage unit 318 and the said. The wind turbine wake partially flows in based on the area of the rotating surface of the rotor 24 of the other wind power generators (2b to 2d) and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313. Determines the presence or absence of the wind power generator 2c. When there is a wind turbine generator 2c into which the wake of the wind turbine partially flows, the position determination unit 314 transfers the information to the control determination unit 315 via the internal bus 319. In the determination of the presence / absence of the wind turbine wake region 2c in which the wind turbine wake partially flows in, the position information of the other wind turbine generators (2b to 2d) and the wind turbine wake region calculated by the wind turbine wake calculation unit 313 ( The configuration may be such that the determination is made based only on the wake region).

The yaw angle calculation unit 316 directs the rotation surface (yaw angle) of the rotor 24 of the wind power generator 2a located on the windward side when the wake avoidance control (FIG. 8) and the wake center control (FIG. 9) are executed. ), And transferred to the control determination unit 315 via the internal bus 319. The direction (yaw angle) of the rotating surface of the rotor 24 of the wind turbine generator 2a located on the wind side is the position information of the wind turbine generator 2c into which the wake of the wind turbine partially flows, which is read from the storage unit 318. It is calculated based on the area of the rotating surface of the rotor 24. Further, the yaw angle calculation unit 316 rotates the rotor 24 in the wind power generator 2a corresponding to the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) selected by the control determination unit 315 described later. The direction of the surface (yaw angle) is used as a yaw angle control command and is output to the yaw angle control device 33 via the output I / F.

The demand forecasting unit 322 forecasts the demand for electric power from the time zone and the season. Specifically, it is judged that the demand is large during the daytime, while the demand is low at nighttime. The demand forecasting unit 322 transfers the predicted power demand to the control determination unit 315 via the internal bus 319.
When the power demand transferred from the demand forecasting unit 322 is large, the control determination unit 315 performs wake avoidance control (FIG. 8) or normal operation, that is, wind power generation located on the wind side in order to secure the amount of power generation. The yaw angle control device 33 (FIG. 1) controls the yaw angle so that the rotating surface of the rotor 24 of the device 2a faces the wind direction, and one of the normal operation continuation to continue the operation is selected. On the other hand, when the power demand transferred from the demand prediction unit 322 is small, the wind power generator 2a located on the wind side when the wake avoidance control (FIG. 8) obtained by the yaw angle calculation unit 316 is executed. Calculates the amount of deviation between the direction (yaw angle) of the rotating surface of the rotor 24 and the wind direction flowing into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the wind side) determined by the wind direction calculation unit 312. .. Similarly, the direction (yaw angle) of the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side when the wake center control (FIG. 9) is executed, and the self (determined by the wind direction calculation unit 312). The amount of deviation from the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a) located on the windward side is calculated. Then, the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) showing a value with a small calculated deviation amount is selected and transferred to the yaw angle calculation unit 316 via the internal bus 319. That is, the control determination unit 315 prioritizes the increase in the amount of power generation over the suppression of the degree of damage of the wind power generation device 2a located on the windward side only when the power demand is large.

Next, the operation of the control device 31d will be described.
As shown in FIG. 17, in step S501, the measured value acquisition unit 311 acquires the wind direction data and the wind speed data measured by the anemometer 32 via the input I / F 317a and the internal bus 319, for example, A. Performs / D conversion processing, smoothing processing (noise removal), normalization processing, and the like. Then, the measured value acquisition unit 311 transfers the processed wind direction data to the wind direction calculation unit 312 via the internal bus 319.

In step S502, the wind direction calculation unit 312 determines the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a (own) located on the windward side based on the wind direction data processed by the transferred measurement value acquisition unit 311. decide.
In step S503, the wind turbine wake calculation unit 313 uses the wind direction determined by the wind direction calculation unit 312, the wind speed data processed by the measured value acquisition unit 311 and the current yaw angle (rotation of the rotor 24) stored in the storage unit 318. The wind turbine wake region (wake region) is calculated based on the surface orientation information), the shape data of the blade 23, the rotation speed of the rotor 24, or the pitch angle of the blade 23.

In step S504, the position determination unit 314 accesses the storage unit 318 via the internal bus 319, and of another wind power generation device (2b to 2d) installed in the wind farm 1 read from the storage unit 318. Based on the position information and the wind turbine wake region (wake region) calculated by the wind turbine wake calculation unit 313 , it is determined whether or not there is a wind power generation device 2c in which the wind turbine wake partially flows. As a result of the determination, when there is no wind power generation device 2c into which the wake of the wind turbine partially flows, the wind power generation device 2a located on the windward side is set so that the rotating surface of the rotor 24 faces the wind direction as usual. , The yaw angle control device 33 (FIG. 1) controls the yaw angle and ends the process. On the other hand, as a result of the determination, if there is a wind power generation device 2c into which the wake of the wind turbine partially flows, the process proceeds to step S505.

In step S 505 , the yaw angle calculation unit 316 rotates the rotor 24 of the wind power generator 2a located on the windward side when the wake avoidance control (FIG. 8) and the wake center control (FIG. 9) are executed. Each direction (yaw angle) is obtained and transferred to the control determination unit 315 via the internal bus 319.
In step S506, the demand forecasting unit 322 forecasts the demand for electric power from the time zone and the season. Specifically, it is judged that the demand is large during the daytime, while the demand is low at nighttime. The demand forecasting unit 322 transfers the predicted power demand to the control determination unit 315 via the internal bus 319.

In step S507, the control determination unit 315 selects wake avoidance control (FIG. 8) or continuation of normal operation in order to secure the amount of power generation when the power demand transferred from the demand forecast unit 322 is large. On the other hand, when the power demand transferred from the demand prediction unit 322 is small, the wind power generator 2a located on the wind side when the wake avoidance control (FIG. 8) obtained by the yaw angle calculation unit 316 is executed. Calculates the amount of deviation between the direction (yaw angle) of the rotating surface of the rotor 24 and the wind direction flowing into the rotating surface of the rotor 24 of itself (the wind power generator 2a located on the wind side) determined by the wind direction calculation unit 312. .. Similarly, the direction (yaw angle) of the rotating surface of the rotor 24 of the wind power generator 2a located on the windward side when the wake center control (FIG. 9) is executed, and the self (determined by the wind direction calculation unit 312). The amount of deviation from the wind direction flowing into the rotating surface of the rotor 24 of the wind power generator 2a) located on the windward side is calculated. Then, the wake avoidance control (FIG. 8) or the wake center control (FIG. 9) showing a value with a small calculated deviation amount is selected and transferred to the yaw angle calculation unit 316 via the internal bus 319.

In step S 508 , the yaw angle calculation unit 316 is windward corresponding to the wake avoidance control (FIG. 8), the wake center control (FIG. 9), or the continuation of normal operation selected by the control determination unit 315. The direction (yaw angle) of the rotating surface of the rotor 24 in the wind power generator 2a located in is output to the yaw angle control device 33 via the output I / F as a yaw angle control command, and the process is completed.

As described above, according to the present embodiment, in addition to the effect of the first embodiment, by changing the control priority according to the demand for electric power, the stable power supply when necessary and the degree of damage to the wind power generation device can be determined. Both reductions can be achieved.

The present invention is not limited to the above-described examples, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment.

1 ... Wind farm 2 ... Wind power generator 2a ... Wind power generator 2b located on the wind side ... Wind power generator 2c, 2d located on the leeward side ... Wind power generator 20 ... Tower 21 ... Nacelle 22 ... Hub 23 ... Blade 24 ... Rotor 25 ... Main shaft 27 ... Accelerator 28 ... Generator 29 ... Main frame 30 ... Power Converters 31, 31a, 31b, 31c, 31d ... Control device 32 ... Wind direction anemometer 33 ... Yaw angle control device 311 ... Measured value acquisition unit 312 ... Wind direction calculation unit 313 ... Wind turbine wake calculation unit 314 ... Position determination unit 315 ... Control determination unit 316 ... Yaw angle calculation unit 317a ... Input I / F
317b ... Output I / F
317c ・ ・ ・ Communication I / F
318 ... Storage unit 319 ... Internal bus 320 ... Operation record holding unit 321 ... Damage degree calculation unit
322 ... Demand Forecasting Department

Claims (13)

A wind farm having a plurality of wind power generators including at least a rotor that rotates in response to wind and a yaw angle control device that controls the direction of the rotating surface of the rotor.
The wake region is determined based on the wind direction data and the information on the direction of the rotation surface of the rotor of the wind turbine generator located on the windward side, and based on the determined position information of the wake region and the wind turbine generator located on the leeward side. A control device for controlling the direction of the rotating surface of the rotor of the wind power generator located on the windward side is provided.
In the control device, when there is a wind power generation device located on the leeward side in which the wake of the wind turbine that has passed through the wind power generation device located on the leeward side partially flows in, the wind power generation device located on the leeward side is used. The wake center control that controls the direction of the rotation surface of the rotor of the wind power generator located on the windward side so as to be located inside the wake region generated by the wind power generator located on the windward side, and the generation. It is provided with a wake avoidance control that controls the direction of the rotation surface of the rotor of the wind power generator located on the windward side so as to be located outside the wake region to be located, and is provided in the determined wake region and the leeward side. A wind farm characterized in that either wake center control or wake avoidance control is selected based on the position information of the wind power generator located. In the wind farm according to claim 1.
The control device is a wind farm that controls the direction of the rotating surface of the rotor of the wind power generation device located on the leeward side so as to reduce the load received by the wind power generation device located on the leeward side. In the wind farm according to claim 1 or 2.
The control device is located on the windward side so that in the wake center control, the wind power generation device located on the leeward side is located in the center of the wake region generated by the wind power generation device located on the windward side. A wind farm characterized by controlling the orientation of the rotating surface of the rotor of a wind farm. In the wind farm according to claim 3.
The control device is
A first orientation, which is the direction of the rotor rotation surface of the wind turbine located on the leeward side in the leeward center control so that the wind turbine generator located on the leeward side is located inside the wake region. In addition to calculating, in the direction of the rotating surface of the rotor of the wind power generator located on the leeward side in the leeward avoidance control so that the wind power generator located on the leeward side is located outside the wake region. A yaw angle calculation unit that calculates a second direction,
The amount of deviation between the first direction and the wind direction data and the amount of deviation between the second direction and the wind direction data are calculated, and the calculated deviation amount is small as the first direction or the second direction. A wind farm including a control determination unit that determines the direction of a rotating surface of a rotor of a wind power generator located on the wind side. In the wind farm according to claim 4.
The control device is
At least, an operation record holding unit that stores information including the operation history of the wind power generation device located on the windward side, and
Based on the operation history, the degree of damage to the wind power generator located on the windward side is obtained, and based on the obtained degree of damage, the amount of deviation between the first direction and the wind direction data and the second direction and the wind direction are obtained. It is equipped with a damage degree calculation unit that obtains an allowable value for the amount of deviation from the data.
The control determination unit is located on the windward side of the rotor of the wind power generator so that the calculated deviation amount is small and the deviation amount is less than the allowable value and is in the first direction or the second direction. A wind farm characterized by determining the orientation of the wind farm. In the wind farm according to claim 4.
The control device is
At least, an operation record holding unit that stores information including the operation history of the wind power generation device located on the windward side, and
A damage degree calculation unit for obtaining the damage degree of the wind power generation device located on the windward side based on the operation history is provided.
When the degree of damage to the wind power generator located on the leeward side is greater than the degree of damage to the wind power generator located on the leeward side acquired via the communication interface, the control determination unit controls the wake center. Select to determine the orientation of the rotating surface of the rotor of the wind turbine located on the leeward side so that the wind turbine located on the leeward side is located inside the wake region, and is located on the leeward side. When the damage degree of the wind power generation device located on the leeward side is larger than the damage degree of the wind power generation device, the wake avoidance control is selected and the wind power generation device located on the leeward side is outside the wake region. A wind farm characterized in that the direction of the rotating surface of the rotor of the wind turbine generator located on the windward side is determined so as to be located on the wind farm. In the wind farm according to claim 4.
The control device includes a demand forecasting unit that forecasts the demand for electric power based on the time zone and / or the season.
When the power demand by the demand forecasting unit is large, the control determination unit determines that the wind power generator located on the leeward side is located outside the wake region or the rotor of the wind power generator located on the windward side. The direction of the rotating surface of the rotor of the wind power generator located on the windward side is determined so that the rotating surface faces the wind direction, and when the power demand by the demand forecasting unit is small, the calculated deviation amount is small. A wind farm characterized in that the orientation of the rotating surface of the rotor of the wind power generator located on the windward side is determined so as to be the orientation of the wind farm or the second orientation. A wind farm that can be installed in a wind farm
At least a rotor that rotates in response to the wind,
A yaw angle control device that controls the direction of the rotating surface of the rotor,
The wake region is determined based on the wind direction data and the information on the direction of the rotating surface of the rotor, and based on the position information of the determined wake region and other wind power generators located on the leeward side, the rotating surface of the rotor Equipped with a control device to control the orientation,
In the control device, if there is another wind power generation device located on the leeward side in which the wake of the wind turbine that has passed through the wind power generation device partially flows in, the other wind power generation device located on the leeward side is behind. A wake center control that controls the direction of the rotating surface of the rotor so as to be located inside the flow region, and a wake avoidance control that controls the direction of the rotating surface of the rotor so that it is located outside the wake region. The wind power generation device is characterized in that either wake center control or wake avoidance control is selected based on the determined position information of the wake region and the wind power generation device located on the leeward side. In the wind power generator according to claim 8.
The control device is a wind power generation device that controls the direction of a rotating surface of the rotor so as to reduce a load received by another wind power generation device located on the leeward side. In the wind power generator according to claim 8 or 9.
It said controller, in the wake central control, so as to be positioned at the center of the other wind turbine generator is the wake region located on the leeward side, and controlling the orientation of the plane of rotation of said rotor wind Power generator. In the wind power generator according to claim 10.
The control device is
The first direction, which is the direction of the rotating surface of the rotor in the wake center control , is calculated so that the other wind power generator located on the leeward side is located inside the leeward region, and the leeward direction is calculated. A yaw angle calculation unit that calculates a second direction, which is the direction of the rotating surface of the rotor, in the wake avoidance control so that the other wind power generator located on the side is located outside the leeward region.
The amount of deviation between the first direction and the wind direction data and the amount of deviation between the second direction and the wind direction data are calculated, and the calculated deviation amount is small as the first direction or the second direction. A wind power generator including a control determination unit that determines the direction of the rotating surface of the rotor so as to be. In the wind power generator according to claim 11.
The control device is
A driving record holding unit that stores information including at least driving history,
The degree of damage is obtained based on the operation history, and the permissible value of the amount of deviation between the first direction and the wind direction data and the amount of deviation between the second direction and the wind direction data is obtained based on the obtained degree of damage. Equipped with a damage degree calculation unit
The control determination unit is characterized in that the orientation of the rotating surface of the rotor is determined so that the calculated deviation amount is small and the orientation is the first orientation or the second orientation, which is less than the allowable value. Wind power generator. In the wind power generator according to claim 11.
The control device is
A driving record holding unit that stores information including at least driving history,
A damage degree calculation unit for obtaining the damage degree based on the operation history is provided.
When the damage degree obtained by the damage degree calculation unit is larger than the damage degree of the other wind power generation device located on the leeward side acquired via the communication interface, the control determination unit controls the wake center. Select and determine the orientation of the rotating surface of the rotor so that the other wind turbine generator located on the leeward side is located inside the wake region, and the degree of damage is higher than the degree of damage obtained by the damage degree calculation unit. When the degree of damage of the other wind turbines located on the leeward side is large, the wake avoidance control is selected so that the other wind turbines located on the leeward side are located outside the leeward region. A wind power generator characterized in determining the orientation of the rotating surface of a rotor.

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